基于复振幅调控超表面衍射器件的光纤传输图像恢复方法及装置
By deploying complex amplitude modulated metasurface diffraction devices at the far end of multimode optical fibers and designing metasurface arrays using diffraction neural networks or analytical methods, complex amplitude modulation of circularly polarized light is achieved. This solves the problems of mode dispersion and crosstalk in multimode optical fiber transmission, enabling efficient and miniaturized image restoration, suitable for applications such as high-speed communication and endoscopy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG UNIV
- Filing Date
- 2025-03-25
- Publication Date
- 2026-07-17
AI Technical Summary
Multimode fiber suffers from mode dispersion and crosstalk during transmission, which reduces image clarity and accuracy and results in a larger system size, limiting its application in fields such as chip-level mode multiplexing and on-chip quantum optics.
An optical fiber transmission image restoration method based on complex amplitude modulated metasurface diffraction devices is adopted. The metasurface array is designed by training a diffraction neural network or by analytical method to modulate the outgoing circularly polarized light with complex amplitude, thereby realizing high-resolution or low-resolution image restoration.
It improves the accuracy and stability of image restoration, realizes the miniaturization of multimode fiber imaging systems, and is suitable for high-speed communication and endoscopy scenarios, thereby enhancing the quality of image restoration.
Smart Images
Figure CN120447131B_ABST